In 2012, the Large Hadron Collider (LHC) at the European Center for Nuclear Research (CERN) has found the long sought for Higgs particle. But the search for the underlying building blocks of nature is not over. For many years, theorists and experimentalists have worked together in order to theoretically construct and experimentally verify (or falsify) models explaining the building blocks of nature. Astrophysical measurements point to the existence of dark matter, which cannot be accounted for by the Standard Model (SM) of particle physics. Furthermore, theoretical and experimental uncertainties allow for additional matter content.

I plan to investigate models with extended scalar sectors, where I will build on previous studies with a simple scalar extension, where I will investigate specific decay patterns. For models with dark matter candidates, I plan to explicitely study and devise search strategies for LHC Run III. I also will investigate the discovery prospects of these models at future colliders, including all know n constraints on the model. All of these projects will allow to further tune experimental search strategies and render novel insight into the building blocks of nature.

The second part of the proposal deals with the calculation of accurate predictions for collider processes, where smart strategies need to be applied in order to calculate the corresponding contributions within feasible computational time scales. The developed public tools will be of benefit for both the theoretical and experimental community in performing precise simulations of physical processes on feasible time scales.